Home / 19,715.90-27,192.51-12,642.98

Finding the Fourth Proportional to 19,715.90, 27,192.51 and 12,642.98

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Solution

The fourth proportional to 19,715.90, 27,192.51 and 12,642.98 is: 17,437.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,715.90 : 27,192.51 = 12,642.98 : x
  2. Step 2: Convert to fraction form
    19,715.90/27,192.51 = 12,642.98/x
  3. Step 3: Cross multiply
    19,715.90x = 27,192.51 × 12,642.98
  4. Step 4: Simplify right side
    19,715.90x = 343,794,224.12
  5. Step 5: Solve for x
    x = 343,794,224.12/19,715.90
  6. Step 6: Final answer
    x = 17,437.41

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.